| Sub-Type | Slide Rules |
|---|---|
| Type | Scientific Instruments |
| Period | . |
| Material | wood |
| Country/Region of Manufacture | United Kingdom |
Check the listing for details. Vintage Keuffel&Esser Co polyphase Slide Rule. Condition: Used. Listed at 64.72 USD. The Vintage Keuffel&Esser Co polyphase slide rule . Good condition
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